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| 利用H ach仪器开发低浓度COD的测试方法 |
| Establish theM ethod to TestLow Concentration COD byHACH Device |
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| DOI： |
| 中文关键词: COD H ach 仪器 测试 低浓度 |
| 英文关键词: COD HACH device D etermination Low concentration |
| 基金项目: |
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| 中文摘要: |
| 利用H ach仪器开发了0 m g/L~ 150 m g/L COD 的测试方法。采用反应器消解, 比色法测定, 配制 的消解液能保证样品消解过程中浓硫酸和催化剂的含量与国标法相当, 通过150 m g/L COD 样品消解结束后重铬酸根离子半电池反应的电位折中确定重铬酸钾浓度。校准曲线线性关系良好, 方法检出限为7 m g/L, 与国标法作比较, 结果表明两种方法可替换使用。 |
| 英文摘要: |
| Thisarticle hasestablishedthem ethodtotestthe0 mg/L ~ 150 mg/L COD byHACH device.The digestivesolution couldinsurethatthecontentofoilofvitriolandthecatalystwasthesam easthe National StandardM ethod duringtheprocessofdigestingthesamplewithreactordigestion and colorimetricdetermination. Thearticle hasstudied the concentration ofpotassium dichromate withthesolution ofend digestive 150 mg/L COD. Theresultshasshown thatthis method wasso perfectthatcouldinterchange with the N ationalStandard M ethodwiththelowestdeterminationlevelwas7 mg/L andtheadjusting curve hashad agoodlinearityrelation. |
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